John Wayne Airport doesn't offer a nonstop path to Scandinavia, so anyone booking business class from Orange County to Copenhagen needs to think of it as a two-leg journey built around a strong domestic-to-international connection. There is no nonstop service on this city pair — American, Delta, and United all route passengers through their respective hub-and-partner networks, typically connecting through Dallas-Fort Worth or Chicago O'Hare on American, Atlanta, JFK, or Minneapolis on Delta, or Newark, Chicago, and increasingly Denver on United, before the transatlantic hop into Copenhagen. I've flown all three combinations, and the sweet spot tends to be a late-morning SNA departure that lands you at the hub with enough buffer to relax in a Star Alliance or SkyTeam lounge before the long-haul segment, rather than a tight connection that leaves you sprinting past customs-adjacent security lines.
On the transatlantic leg itself, expect Delta's A330 or A350 with the Delta One suite (fully enclosed doors on the A350 fleet), United's Polaris seats aboard 767 or 777 aircraft depending on the specific rotation, or American's Flagship Suite on its 777-300ER equipped routes — all lie-flat, all direct-aisle-access on the widebodies. My insider tip: if your itinerary connects through JFK or Newark, book the earliest viable connection even if it means a longer layover, because summer thunderstorm season in the Northeast (June through August) causes disproportionate delays on evening departures, and a scrapped connection into Copenhagen means losing a full day given the once-daily frequency most carriers operate on this route.
Copenhagen itself rewards early arrivals — CPH's efficient immigration hall means business class passengers deplaning ahead of economy often clear in minutes, making a 7 or 8 a.m. local arrival ideal for maximizing your first day. May through September remains the window for the best combination of fare value and schedule reliability, before winter's storm-driven cancellations complicate hub connections. Given the routing complexity and fare volatility on this corridor, setting up automated price alerts is the smartest way to catch a premium-cabin deal before it disappears.